Two years later, fourteen Bohemian princes came to Regensburg to receive baptism there.
Emmeram's Abbey did in 1295 and Obermünster in 1315.b: The Bishopric, the Imperial City and all three Imperial Abbeys were mediatised simultaneously.On 8 December 899 Arnulf of Carinthia, descendant of Charlemagne, died at Regensburg (known as Ratisbon at the time), Bavaria, Germany.Between 11, the Stone Bridge across the Danube was built at Regensburg.The Celtic name Radasbona was the oldest given to a settlement near the present city. In 179, a new Roman fort Castra Regina ("fortress by the river Regen") was built for Legio III Italica during the reign of Emperor Marcus Aurelius.
It was an important camp on the most northerly point of the Danube: it corresponds to what is today the core of Regensburg's Old City or Altstadt east of the Obere and Untere Bachgasse and West of the Schwanenplatz.
In 1810 Dalberg ceded Regensburg to the Kingdom of Bavaria, he himself being compensated by the award of Fulda and Hanau to him under the title of "Grand Duke of Frankfurt".
Between April 19 and April 23, 1809, Regensburg was the scene of the Battle of Ratisbon between forces commanded by Baron de Coutaud (the 65th Ligne) and retreating Austrian forces.
It is believed that as early as in late Roman times the city was the seat of a bishop, and St Boniface re-established the Bishopric of Regensburg in 739.
From the early 6th century, Regensburg was the seat of a ruling family known as the Agilolfings.
Thus, Regensburg was one of the central towns of the Empire, attracting visitors in large numbers. But the town of Regensburg must not be confused with the Bishopric of Regensburg.